(Electro)catalytic oxidation of sulfide and recovery of elemental sulfur from sulfide-laden streams

MnxOy coated over TiO2 nanotube array substrate was doped with Mo and polyaniline (PANI) and applied for electrochemical desulfurization of concentrated sulfide (HS−) solutions at basic pH, typical of biogas scrubbing solutions and industrial wastewater. Mo and PANI co-dopants significantly enhanced...

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Detalles Bibliográficos
Autores: Sergienko, Natalia, Cuervo Lumbaque, Elisabeth, Radjenovic, Jelena
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2023
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/25460
Acceso en línea:http://hdl.handle.net/10256/25460
Access Level:acceso embargado
Palabra clave:Oxidació electrolítica
Electrolytic oxidation
Electrocatàlisi
Electrocatalysis
Òxids de manganès
Manganese oxides
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spelling (Electro)catalytic oxidation of sulfide and recovery of elemental sulfur from sulfide-laden streamsSergienko, NataliaCuervo Lumbaque, ElisabethRadjenovic, JelenaOxidació electrolíticaElectrolytic oxidationElectrocatàlisiElectrocatalysisÒxids de manganèsManganese oxidesMnxOy coated over TiO2 nanotube array substrate was doped with Mo and polyaniline (PANI) and applied for electrochemical desulfurization of concentrated sulfide (HS−) solutions at basic pH, typical of biogas scrubbing solutions and industrial wastewater. Mo and PANI co-dopants significantly enhanced the anode activity towards sulfide oxidation and ensured its complete stability even in highly corrosive sulfide solutions (e.g., 200 mM HS−). This was due to the increased electrochemically active surface area, improved coating conductivity and reduced charge transfer resistance. The (electro)catalytic oxidation of HS− demonstrated robust performance with very limited impact of different operational parameters (e.g., dissolved oxygen, anode potential, HS− concentration). Due to the formation of elemental sulfur (S0) layer at the anode surface at basic pH, longer term anode usage requires its periodic removal. Chemical dissolution of S0 with toluene allows its rapid removal without affecting the anode activity, and easy recrystallization and recovery of pure sulfurThe authors would like to acknowledge ERC Starting Grant project ELECTRON4WATER (Three-dimensional nanoelectrochemical systems based on low-cost reduced graphene oxide: the next generation of water treatment systems), project number 714177. ICRA researchers thank funding from CERCA program. The ICS5000 Dionex received support from the CERCA Institute through the CERCAGINYS program, funded by the Spanish Ministry of Science and Innovation6ElsevierEuropean Commissioninfo2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionpeer-reviewedapplication/pdfhttp://hdl.handle.net/10256/25460http://hdl.handle.net/10256/25460© Water Research, 2023, vol. 245, art. núm. 120651Articles publicats (ICRA)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.watres.2023.120651info:eu-repo/semantics/altIdentifier/issn/1879-2448info:eu-repo/semantics/altIdentifier/eissn/0043-1354info:eu-repo/grantAgreement/EC/H2020/714177Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/embargoedAccessoai:recercat.cat:10256/254602026-05-29T05:05:01Z
dc.title.none.fl_str_mv (Electro)catalytic oxidation of sulfide and recovery of elemental sulfur from sulfide-laden streams
title (Electro)catalytic oxidation of sulfide and recovery of elemental sulfur from sulfide-laden streams
spellingShingle (Electro)catalytic oxidation of sulfide and recovery of elemental sulfur from sulfide-laden streams
Sergienko, Natalia
Oxidació electrolítica
Electrolytic oxidation
Electrocatàlisi
Electrocatalysis
Òxids de manganès
Manganese oxides
title_short (Electro)catalytic oxidation of sulfide and recovery of elemental sulfur from sulfide-laden streams
title_full (Electro)catalytic oxidation of sulfide and recovery of elemental sulfur from sulfide-laden streams
title_fullStr (Electro)catalytic oxidation of sulfide and recovery of elemental sulfur from sulfide-laden streams
title_full_unstemmed (Electro)catalytic oxidation of sulfide and recovery of elemental sulfur from sulfide-laden streams
title_sort (Electro)catalytic oxidation of sulfide and recovery of elemental sulfur from sulfide-laden streams
dc.creator.none.fl_str_mv Sergienko, Natalia
Cuervo Lumbaque, Elisabeth
Radjenovic, Jelena
author Sergienko, Natalia
author_facet Sergienko, Natalia
Cuervo Lumbaque, Elisabeth
Radjenovic, Jelena
author_role author
author2 Cuervo Lumbaque, Elisabeth
Radjenovic, Jelena
author2_role author
author
dc.contributor.none.fl_str_mv European Commission
dc.subject.none.fl_str_mv Oxidació electrolítica
Electrolytic oxidation
Electrocatàlisi
Electrocatalysis
Òxids de manganès
Manganese oxides
topic Oxidació electrolítica
Electrolytic oxidation
Electrocatàlisi
Electrocatalysis
Òxids de manganès
Manganese oxides
description MnxOy coated over TiO2 nanotube array substrate was doped with Mo and polyaniline (PANI) and applied for electrochemical desulfurization of concentrated sulfide (HS−) solutions at basic pH, typical of biogas scrubbing solutions and industrial wastewater. Mo and PANI co-dopants significantly enhanced the anode activity towards sulfide oxidation and ensured its complete stability even in highly corrosive sulfide solutions (e.g., 200 mM HS−). This was due to the increased electrochemically active surface area, improved coating conductivity and reduced charge transfer resistance. The (electro)catalytic oxidation of HS− demonstrated robust performance with very limited impact of different operational parameters (e.g., dissolved oxygen, anode potential, HS− concentration). Due to the formation of elemental sulfur (S0) layer at the anode surface at basic pH, longer term anode usage requires its periodic removal. Chemical dissolution of S0 with toluene allows its rapid removal without affecting the anode activity, and easy recrystallization and recovery of pure sulfur
publishDate 2023
dc.date.none.fl_str_mv 2023
info
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
peer-reviewed
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/25460
http://hdl.handle.net/10256/25460
url http://hdl.handle.net/10256/25460
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.watres.2023.120651
info:eu-repo/semantics/altIdentifier/issn/1879-2448
info:eu-repo/semantics/altIdentifier/eissn/0043-1354
info:eu-repo/grantAgreement/EC/H2020/714177
dc.rights.none.fl_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/embargoedAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv embargoedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv © Water Research, 2023, vol. 245, art. núm. 120651
Articles publicats (ICRA)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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